Data from the FCC itself is being used to compile the database, which Google has translated into a Maps overlay. This allows users to see which frequencies, if any, are available in their area, for both portable and more heavily regulated fixed devices.

Alan Norman, principal of Google's Access strategy team, said in a blog post that the idea is to provide more flexibility for wireless networks.

"Spectrum sharing allows devices to use spectrum when it is not in use by someone else simply by checking a data base. We're in the process (with several others) of becoming a certified database administrator for [whitespace]," he wrote.

The trial is set to last for 45 days. If successful, the FCC will officially certify Google, which will allow registered wireless devices to automatically query the database and use only available local bandwidths.